3237421 has 4 divisors (see below), whose sum is σ = 3531744. Its totient is φ = 2943100.

The previous prime is 3237419. The next prime is 3237431. The reversal of 3237421 is 1247323.

3237421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3237421 - 2¹ = 3237419 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3237392 and 3237401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3237431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147145 + ... + 147166.

It is an arithmetic number, because the mean of its divisors is an integer number (882936).

Almost surely, 2^3237421 is an apocalyptic number.

It is an amenable number.

3237421 is a deficient number, since it is larger than the sum of its proper divisors (294323).

3237421 is a wasteful number, since it uses less digits than its factorization.

3237421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294322.

The product of its digits is 1008, while the sum is 22.

The square root of 3237421 is about 1799.2834684952. The cubic root of 3237421 is about 147.9334525507.

It can be divided in two parts, 323 and 7421, that added together give a square (7744 = 88²).

The spelling of 3237421 in words is "three million, two hundred thirty-seven thousand, four hundred twenty-one".